Metastable zone width for secondary nucleation and secondary nucleation inside the metastable zone

• Type: Article in International Scientific Journal
• Date: 2011

Authors

Khaddour, I (Author) Other; Rocha, F (Author) FEUP

Journal

Title: Crystal Research and Technology

Vol. 46 No. 4

Pages: 373-382

ISSN: 0232-1300

Publisher: Wiley-Blackwell

Indexing

ISI Web of Knowledge - 3 Citations

ISI Web of Science

Scopus - 4 Citations

Scientific classification

FOS: Natural sciences > Chemical sciences

Other information

Authenticus ID: P-002-SQ5

DOI: 10.1002/crat.201000509

Abstract (EN): This study presents an evaluation of a new method, called zero growth activation free energy, used to determine the metastable zone width for the secondary nucleation case. It predicts the metastable zone width with a maximum error of 5-10%. Estimation of the metastable zone width for different isothermal crystallization conditions can be modeled according to a chosen reference set of growth experiments carried out in the volume diffusion regime at different initial supersaturations, using seed crystals of a certain characteristic size. Moreover, the activation free energy of the secondary nucleation was estimated. The role of the enthalpy of immersion in the formation of secondary nucleation events inside the metastable zone was pointed out, as well as its effect in causing extra-fast growth rate. Furthermore, sucrose crystal surface free energy was estimated. (C) 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 10